Experience with Catco converters?
Thread Starter
Race Director
Joined: Mar 2001
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From: San Francisco CA
St. Jude Donor '07
Experience with Catco converters?
I've decided to go to duals with cats on my '75 and looking for good, hi flow converters. Saw some universal fit converters at Summit, made by Catco with a SS case. Opinions?
Race Director
Joined: Sep 1999
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From: Plano TX
I put one of those summit catco's on my spare car (old cadillac). I like it. Fit was perfect. Car passed emissions. Picked up power and added 2-3 mpg. Now the old cat was the ancient pancake type and plugged up by 20 years of crud so anything would have been an improvement, but the catco is definitely getting the job done at $75.
Pro
Joined: Jan 2003
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From: Baton Rouge LA
Several of the late model header systems use Catco cats and they work very well. On a 400rwhp car we will only pick up about 5-10hp by removing the cats. Only better cat that I know of woult be Random Technology but they are pricey. Hope this helps.
.
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Joined: Mar 2001
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From: Living in the Hartland
Originally Posted by Paul @ Thunder
Several of the late model header systems use Catco cats and they work very well. On a 400rwhp car we will only pick up about 5-10hp by removing the cats. Only better cat that I know of woult be Random Technology but they are pricey. Hope this helps.
.
.
Melting Slicks
Joined: Jul 2002
Posts: 3,000
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From: Boulder Creek California
They're all the same once you gut 'em 
That's my plan anyway, Ganey's exhaust thread had some dyno numbers showing big performance increases going from old cat to new highflow cat. I just can't stand the thought of losing even a little power if I can prevent it.
-Chris
That's my plan anyway, Ganey's exhaust thread had some dyno numbers showing big performance increases going from old cat to new highflow cat. I just can't stand the thought of losing even a little power if I can prevent it.
-Chris
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Advanced
Joined: Apr 2002
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From: St. Louis MO
My 81 exhaust is still factory stock. Big old pancake style cat Converter. Car only has 2k on it so it should not be clogged up too bad. Would I see a big difference with a high flow cat? Also would it be possible to put the factory one back on once or twice a year for NCRS judging ?
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From: Plano TX
Originally Posted by Tim Parker
I should have written 20,000 miles not 2
Race Director
Joined: Sep 1999
Posts: 11,361
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From: Plano TX
Originally Posted by Tim Parker
I had no ideal it was that much of a HP thief. Is the switch a nuts and bolts kinda thing?
Instructor
Joined: Jan 2005
Posts: 235
Likes: 1
From: West Seneca New York
Originally Posted by Tim Parker
My 81 exhaust is still factory stock. Big old pancake style cat Converter. Car only has 2k on it so it should not be clogged up too bad. Would I see a big difference with a high flow cat? Also would it be possible to put the factory one back on once or twice a year for NCRS judging ?
I'm new to the forum here. I have an '81 also. I had true duals custom bent with twin Catco converters. When I bought the car, it originally had the 2-1-2 system. No cat though, but instead a "test pipe" with the proper 4 bolt hole flanges. It's just sitting around collecting dust. If your interested in it, let me know.
If you are going to switch the cat. on and off, you'll need to "stockpile" some gaskets for the pipe flanges. lol.
Darryl
Thread Starter
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Joined: Mar 2001
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From: San Francisco CA
St. Jude Donor '07
Originally Posted by bs82vette
I need the Test Pipe is Buffalo Dude does not want it.
(but just to be environmentally conscious, I'll stick a couple cats in there. NO, NO, catalytic CONVERTERS, not felines 
Instructor
Joined: Jan 2005
Posts: 235
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From: West Seneca New York
Originally Posted by bs82vette
I need the Test Pipe is Buffalo Dude does not want it.
If you want it. It's $35.00 total. S+H included. It's yours. Let me know.
If you want pics first, let me know. I'll take a couple and send them to you.
Darryl
